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04-20-2014
103s are a little cold for a stock compression car running 10 psi. 104 would be more appropriate. Less misfires at idle and better fuel economy.
As far as the pulley without exhaust mods, just don't get into boost and all will be okay.
Better idea would be to scan and see if you have knock as is. You might not, but likely will.
Last edited by matt5112; 04-20-2014 at 03:39 PM.
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